Israel geiman



Patented Nov. 29,1898.

2 SheetQ-S'haet I.

l. GEIMAN.

LOU K.

(Application filed Aug. ,11, 1897.)

No. s|4,945;

'.(Nu Model.)

W W W W W rus n: ins co.

Patented Nov. 29, |898.

nu. 6|4,945.v

I. GEIMAN.

L 0 C K (Application led Aug. 11, 1897.)

2 Sheets-Sheet 2.

(No Model.)

v A77'0HNEY.

WITNESSES www @M7/ym m: Noam: Punks coA PHormrrHov. wnsnmcrau. o. c,

UNITED STATES PATENT OFFICE.

ISRAEL GEIMAN, OF MELROSE, MARYLAND.

LOCK.

SPECIFICATION forming part of Letters Patent N o. 614,945, datedNovember 29, 1898. Application led August 11 1897. Serial No. 647,846.(No model.)

To all whom, it may concern.-

Beit known that I, ISRAEL GEIMAN, of Melrose, in the county of Carrolland State of Maryland, have invented certain new and useful Improvementsin Locks; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make'and use the same.

This invention relates to locks and the object in view is to provide asafety burglarproof lock which will prevent the insertion of a key orthe picking of the lock by any one who is not perfectly familiar withthe construction thereof.

The improved lock embodies a sliding keyhole-guard which is moved backand forth by means of the key, and this guard must be operated andthrown into a certain position before the key can be brought intooperative relation to the lock mechanism proper.

The detailed objects and advantages of the invention will appear in thecourse of the subjoined description.

The invention consists in an improved lock embodying certain novelfeatures and details of construction and arrangement of parts, ashereinafter fully described, illustrated in the drawings, andincorporated in the claims hereto appended. y

In the accompanying drawings, Figure l is a horizontal longitudinalsection through a lock constructed in accordance with the presentinvention. Fig. 2 is a vertical cross-section through the same. Fig. 3is an inside face View of one portion of the lock-casing, showing thebolts and actuating means therefor. Fig. 4 is an inside face View of theremaining portion of the lock, showing the slotted sliding guard. Fig. 5is a detail perspeotive view of the guard, looking toward the front sidethereof. Fig. G is an inside face view of the front portion of thelock-case, showing the pinion for actuating the sliding guard. Fig. 7 isa plan view of the keyholeplate which is interposed between the twoportions of the look-case.

Similar numerals of reference designate corresponding parts in theseveral views.

Referring to the drawings, l designates the front portion of thelook-case, and 2 the rear portion thereof, the said portions beingconnected together by screws, bolts, rivets, or other suitable means.The front portion 1 of the lock-case is provided in its rear side with alongitudinal recess 3, and within this recess is arranged a plate 4,provided along one of its longitudinal edges with a rabbet 5. The plate4 at or near its center is out away or recessed, as' indicated at 6, andwithin said recess is arranged a pinion 7, the teeth of which projectinto the rabbet 5. This pinion is provided with a keyhole 8, which isadapted to register with a keyhole 9, extending through the front wallof the part l of the case. When the key is inserted in the opening 9, itenters the opening 8 in the pinion, whereupon by turning the key saidpinion is rotated. l0 designates a plate extending across the recess 6for holding the pinion in place in the plate 4.

ll designates a sliding keyhole-guard which is provided at one edge witha flange 12, adapted to work longitudinally in the rabbet 5 of the plate4 and provided with inwardlyextending teeth 13 for engagement with theteeth of the pinion 7. The guard 1l is adapted to slide atwise againstand lengthwise of the plate 4 and within the recess 3 of the part 1 ofthe lock-case, and it is provided alongits center with a longitudinalslot 14, which embraces the end of the shank of the key and permits ofthe sliding movement of the guard. At or near one end the slot 14 isextended laterally and obliquely, as indicated at l5, to receive andpermit the passage of the bit of the key, and the plate l0 is alsoprovided with a keyhole-slot 16, which is set obliquely and with whichthe slot l5 is adapted to register when the bit of the key is passedthrough the front portion of the case and into the rear portion thereoffor operating the lock mechanism. At one edge the guard l1 is providedwith three or more notches 17, which are engaged at different times bythe bent end 18 of a leaf-spring 19, secured at one end within theportion l of the lock-case. This spring by entering one of the notchesinthe guard serves to hold said guard at the point where it is left,thus also holding the pinion 7 against rotation and keeping the keyholetherein in proper alinement with the keyhole 9 in the lock-case. Thenotches 17 are located at such points that when engaged by the springthey will maintain the guard at each end of its throw and also at thecenter of its throw, and, further, at the point where the slot 15 willregister with the keyhole-slot 1G in the plate 10. Arranged between thetwo portions 1 and 2 of the lock-case is a plate 20. This plate is forthe purpose of preventing the displacement of the sliding guard 11, andit is provided with a keyhole-slot 21,set obliquely and adapted toregister with the slots 15 and 16 when the guard is in a certainposition. This plate is preferably secured to the portion 1 of thecasing by screws or other suitable fasteners.

The rear portion of the lock-case is provided in its inner side with alongitudinal recess 22, extending the entire length of said portion andopening out at the ends thereof. In the end portions of the recess 22are arranged reciprocating bolts 23, the ends of which are adapted to beprojected beyond the ends of the lock-case for engaging suitable keepersand also adapted to be withdrawn into the plane of the lock-case out ofengagement with the keepers. The part 2 is also provided with a centralcircular recess or depression 24, in which is arranged an actuating-h ub25. This hub is itself provided witha central recess 26 and a centralsocket 27 to receive the end of the key-shank. lt is further provided insaid recess and at one side of the center with a socket 28 to receive aprojection on the bit of the key, whereby the key is adapted to turn thehub 25. At points diametrically opposite the hub 25 is cut away to formtangential recesses 29, in which are received the inner ends of thebolts 23, the said inner ends being reduced in thickness and beinginterposed between oppositely-located portions of the hub and pivotallymounted by means of pins 30. The recesses in the hub 25 in which theends of the bolts are received are formed in such manner as to establishshoulders 31, which cooperate with the ends of the bolts to limit therotative movement of the hub in one direction. The movement of the boltsin the opposite direction is limited by means of one or more stop-pins32, located in the end portions of the recess 22.

In view ot' the foregoing description the operation of the lock will beseen to be as follows: The key is inserted through the keyhole 9 in thefront of the case and pressed inward until it engages in the keyhole inthe pinion '7. By now turning the key the pinion is turned and actuatesthe sliding guard. The guard is carried from one end of the recess 3 tothe other until 'the slot 15 is brought into alinement with the slot 16and keyhole in the plate 20. The key may now be inserted farther intothe lock until the bit of the key passes out of engagement with thepinion 7 and into engagement with the hub 25,where upon by turning thekey the projection on the bit of the key will engage the socket 28 inthe hub 25. The hub 25 may now be turned and the bolts 23 Withdrawn fromtheir engagement with the keepers,whereupon the door, lid, or otherdevice may be opened. In locking the door, lid, or other device theoperation just described is reversed. ln no matter what position thesliding guard is left it will be held in such position by reason of theaction of the spring 19, and the pinion will be held stationary by thesame means, thus maintaining all parts of the lock in proper operativeposition and preventing disarrangement thereof.

It will of course be understood that the lock above described issusceptible of various changes in the form, proportion, and minordetails of construction,which may accordingly be resorted to withoutdeparting from the principle or sacriiicin g any of the advantages ofthe invention.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

l. The combination with a lock, of a sliding keyhole-guard havingkeyhole-openings registering with the keyhole in the lock-case, and apinion having a keyhole to receive the key and geared to said guard,substantially as described.

2. The combination witha lock, of a sliding keyhole-guard mounted in thelock-case and provided with notches and teeth, a pinion having a keyholeto receive the key and adapted to mesh with and actuate said guard, anda spring engaging notches in the guard for holding said guard atpredetermined points, substantially as described.

3. The combination with a lock, of a sliding keyhole-guard provided atone edge with a notched and toothed iiange and also having a keyhole andslot, a plate set within the lockcase and provided along one of itslongitudinal edges with a rabbet to receive said fiange, and a pinionmounted in a recess in said plate and meshing with the teeth of theguard, said pinion having a keyhole, substantially as and for thepurpose described.

4C. The combination with a lock, of a sliding keyhole-guard mountedtherein, a pinion for actuating said keyhole-guard, said pinion beingprovided with a keyhole whereby it is adapted to be actuated by the key,and a plate arranged contiguous to said pinion and provided with akeyhole set out of alinement with or extending at an angle to thekeyhole in the lock-case, substantially as and for the purposedescribed.

5. The combination with a lock-case, comprising two sections or portionssuitably connected, of a rotatable hub mounted in a recess in oneportion or section and provided at diametrically opposite points withtangential recesses, and also provided with a central circular recess,oppositely-extending bolts IOO IIO

having pivotal connection with said hub and In testimony whereof I havesigned this having their inner ends arranged in said tanspecification inthe presence of two Subscribgential recesses, and a keyhole-guard aringWitnesses.

ranged in front of said rotatable hub and ISRAEL GEIMAN. adapted to beactuated by the key prior to its Witnesses: insertion in and engagementwith said rota- D. H. KALTRIDER,

table hub, substantially as described. l EDWARD GEIMAN.

